Reinforced concrete mining-timbers.



J. A. ELLIODTT.

. REINFORCED CONCRETE MINING TIMBERS. APPLICATION FILED MAY 2,1901.

rammed June a, 1909.

ms "cams PETERS co., wasmucmlv. 1. c

JOHN A. ELLIOTT, OF BUTTE, MONTANA.

REINFORCED CONCRETE MINING-TIMBERS.

Specification of Letters Patent.

Patented June 8, 1909.

Applicationfiled May 1907 Serial No. 371,443.

To all whom it may concern: i I Be it known that I, JOHN A. ELLIOTT, a citizen of the United States, residing at Butte, in the county of Silverbow and State of Montana, have invented certain new and useful Improvements in Reinforced Concrete Mining-Timbers and-I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. A

This invention relates to an improved con- Is)truction and arrangement of mining timers.

The object of the invention is to provide a series of matched reinforced mining timbers formed of concrete and adapted to be ar. ranged for use in single or compartment shafts, drifts, levels, stops or stations of a mine.

With the foregoing and other objects in view which will appear as the nature of the invention is better understood, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a series of timbers to go in a mine showing the manner in which the various timbers are joined; Fig. 2 is a fragmentary view of two timbers showing the construction of the dove-tail joint'for connecting the same; and Fig. 3 is a fragmentary Q sectional view of a timber showing the arrangement therein of a tubular metallic sleeve or pipe nipple to receive a hanger or guide rod. Fig. 4 is a cross sectional view through one of the timbers showing the arrangement of the angle iron reinforcing bar embedded therein. 7

In the embodiment of the invention, I provide a series of timbers which are constructed of concrete and formed in suitable molds for i use as posts, cross pieces, etc. adapted to be joined together in a suitable manner to form supports for the shafts, tunnels, drifts, levels, etc. of a mine.

In Fig. 1 of the drawings, is shown one arrangement of the timbers, the same beinghere shown in the form of a frame-squareor rectangular in cross section for use in shafts or similar parts of the mine, and consisting of corner posts 1, on the upper and lower ends I of which are rectangular frames comprising side pieces or timbers 2 which are connected together at their ends by end pieces or timbers 3. The meeting ends of the side and end pieces are notched out and fitted together as shown. The fitted ends of the side and end cross pieces are rabbetedout to form seats 4 for the ends of the posts.

On the upper and lower frames formed by the side and end cross pieces are intermediate cross pieces 5, the ends of which are dovetailed as at 6 and adapted to be engaged with dove-tailed recesses formed in the inner sides of the side timbers. The intermediate cross pieces 5 divide the frame intoa passageway for the workman and a shaft for an elevator cage or car.

The side pieces or timbers 2 of-the upper and lower frames are secured together by pairs of tie rods 6 each of which is here shown in the form of two sections, the inner ends of which are hooked together while the outer ends are threaded and passed through sleeves or pipe nipples 7 which are embedded in the side timbers 2 when they are formed. On the threaded ends of the rods 6 are arranged clamping washers 8 and 9 by means of which the rods 6* are tightened and the timbers of the frame securely clamped together.

At suitable positions in the timbers 2 are molded nipples or sleeves 10 through which are adapted to be inserted bolts, by means of which cage guide bars 13 may be secured in the cage compartment of the frame and ladder sections 14 may be secured in ladder way, said. guide bars and ladder section being shown in dotted lines.

As hereinbefore stated, the timbers are constructed in suitable molds and in various forms to suit the different uses to which they are required in forming supports for the different parts of the mine. The timbers are preferably reinforced by angle bars or other suitably shaped pieces or sections of iron 15 which are molded therein when the timbers are formed. This manner of reinforcing the timbers greatly increases the strength of the same and enables them to stand great stress and pressure.

From the foregoing description taken in connection with the accompanying drawings,

the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new is 1. A series of reinforced mining timbers formed of concrete, molded in the required shape and having matched ends adapted to be fitted together to provide supporting frames for shafts, tunnels, drifts, levels, etc. of the mine, metallic tubes embedded in and extending vertically through said timbers, jointed tie rods having threaded ends adapted to be inserted through said sleeves and clamping washers and nuts arranged in said threaded ends of the rods, substantially as described.

2. A series of reinforced mining timbers formed of concrete molded in the required shape and having matched ends adapted to be fitted together to provide supporting frames for shafts, tunnels, drifts, levels, etc., of a mine, metallic tubes embedded in and extending vertically through said timbers, sectional tie rods having threaded ends eX- tending through said tubes, clamping washers or nuts arranged on said threaded ends, and sleeves embedded or molded in and eX- tending horizontally through said timbers to receive the fastening bolts for the cage guide bars and ladder sections.

3. A supporting frame for shafts, tunnels, drift levels, etc., of a mine comprising upright concrete corner posts, rectangular frames at the upper and lower ends of said posts, eachof said frames consisting of reinforced concrete side and end pieces, metallic tubes embedded in and extending vertically through the side pieces comprising said frames, sectional tie rods provided at their inner ends with hooked portions to freely engage with each. other and at their opposite ends with threaded portions which extend through said tubes, clamping washers around the threaded projecting ends of the tie rod sections against the top and bottom faces of the side pieces of the upper and lower frames, respectively, and adjusting nuts screwing on the threaded projecting ends of said tie rod sections against said clamping washers and providing a means for adjusting the tension of said sections.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN A. ELLKYlT'l.

Witnesses G. J. LANeFoRn, MIKE LYNCH. 

